I've been vaping for about 3 years now.. I tried out a few mods last year, they were cool and all, but I decided to sell them and go back to the basics. I love my Ego style e-cigs. Even over a 5v mod box.Really sooner or later you are going to want to step into mods and when you do, you are going to need generic batteries and a charger. Liberty Flights has the Ego E-power 3.7V kits for $59.99. With 18650 batteries. It doesn't specify the MAH on the batts but, I can't remember ever seeing an 18650 that was less than 2200. When the time comes, battery replacement will be cheaper too. That's what I'd recommend.